3v4l.org

run code in 300+ PHP versions simultaneously
<?php header('content-type:text/plain'); function HTMLStringify($arr, $seen = array()) { if (is_array($arr)) { $seen[] = $arr; $html = '<ul>'; foreach ($arr as $key => &$value) { $html .= '<li>' . $key; if (is_array($value)){ if(in_array($value, $seen, true)) { $html .= '*RECURSION*'; } else { $html .= HTMLStringify($value, $seen); } } elseif(is_numeric($value) || is_string($value) || is_null($value)) { $html .= ' = ' . $value; } else { $html .= ' [couldn\'t parse ' . gettype($value) . ']'; } $html .= '</li>'; } $html .= '</ul>'; return $html; } else { return null; } } $arr = array(1 => 'one', 2 => 'two'); $arr[3] = &$arr; echo HTMLStringify($arr);

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

VersionSystem time (s)User time (s)Memory (MiB)
8.3.70.0090.00616.50
8.3.60.0170.00316.49
8.3.50.0120.00921.98
8.3.40.0070.01118.68
8.3.30.0100.00319.20
8.3.20.0040.00420.16
8.3.10.0000.00823.63
8.3.00.0040.00419.13
8.2.180.0160.00316.50
8.2.170.0070.00722.96
8.2.160.0040.01620.35
8.2.150.0040.00424.18
8.2.140.0050.00324.66
8.2.130.0170.00326.16
8.2.120.0080.00022.09
8.2.110.0060.00322.08
8.2.100.0070.00417.91
8.2.90.0070.00019.26
8.2.80.0040.00418.05
8.2.70.0040.00417.50
8.2.60.0030.00618.00
8.2.50.0070.00318.07
8.2.40.0030.00518.16
8.2.30.0040.00418.04
8.2.20.0040.00417.70
8.2.10.0000.00818.02
8.2.00.0040.00717.74
8.1.280.0080.00825.92
8.1.270.0060.00322.10
8.1.260.0000.00826.35
8.1.250.0040.00428.09
8.1.240.0060.00323.84
8.1.230.0040.00818.97
8.1.220.0050.00317.74
8.1.210.0040.00418.77
8.1.200.0060.00317.35
8.1.190.0000.00817.65
8.1.180.0000.00818.10
8.1.170.0060.00318.46
8.1.160.0000.00822.01
8.1.150.0040.00418.49
8.1.140.0000.00817.49
8.1.130.0030.00317.82
8.1.120.0050.00217.31
8.1.110.0030.00617.38
8.1.100.0030.00317.41
8.1.90.0080.00017.34
8.1.80.0050.00217.45
8.1.70.0020.00517.33
8.1.60.0100.00017.59
8.1.50.0000.00817.55
8.1.40.0040.00417.42
8.1.30.0040.00417.50
8.1.20.0080.00017.54
8.1.10.0000.00717.48
8.1.00.0080.00017.39
8.0.300.0070.00019.09
8.0.290.0040.00417.18
8.0.280.0000.00818.40
8.0.270.0000.00717.16
8.0.260.0000.00617.30
8.0.250.0000.00816.86
8.0.240.0060.00016.94
8.0.230.0000.00716.94
8.0.220.0000.00716.77
8.0.210.0070.00016.77
8.0.200.0030.00316.82
8.0.190.0050.00216.93
8.0.180.0000.00716.96
8.0.170.0090.00016.94
8.0.160.0040.00416.91
8.0.150.0050.00316.85
8.0.140.0000.00716.85
8.0.130.0030.00313.31
8.0.120.0000.00716.91
8.0.110.0000.00716.89
8.0.100.0000.00816.68
8.0.90.0000.00716.77
8.0.80.0060.00916.88
8.0.70.0000.00816.82
8.0.60.0000.00716.76
8.0.50.0070.00016.92
8.0.30.0110.00617.05
8.0.20.0150.00417.40
8.0.10.0000.00716.95
8.0.00.0140.00316.77
7.4.330.0030.00315.12
7.4.320.0000.00816.49
7.4.300.0000.00616.60
7.4.290.0030.00316.49
7.4.280.0000.00816.60
7.4.270.0000.00716.52
7.4.260.0000.00716.47
7.4.250.0040.00416.58
7.4.240.0010.00616.54
7.4.230.0040.00416.40
7.4.220.0070.01116.60
7.4.210.0080.00616.60
7.4.200.0070.00016.68
7.4.190.0030.00316.47
7.4.160.0090.00916.41
7.4.150.0030.01317.40
7.4.140.0080.00917.86
7.4.130.0090.00916.53
7.4.120.0080.01016.60
7.4.110.0030.01416.50
7.4.100.0060.01616.37
7.4.90.0090.00916.62
7.4.80.0140.00319.39
7.4.70.0030.02016.42
7.4.60.0030.01416.55
7.4.50.0040.00416.27
7.4.40.0100.00722.77
7.4.30.0100.00616.52
7.4.00.0070.01014.89
7.3.330.0000.00713.14
7.3.320.0000.00513.38
7.3.310.0030.00316.39
7.3.300.0070.00016.32
7.3.290.0110.00716.41
7.3.280.0070.00816.33
7.3.270.0000.01617.40
7.3.260.0060.01216.59
7.3.250.0110.00916.53
7.3.240.0090.00916.38
7.3.230.0100.00716.39
7.3.210.0130.00316.47
7.3.200.0100.00719.39
7.3.190.0090.01316.45
7.3.180.0090.00916.37
7.3.170.0040.01216.36
7.3.160.0130.01016.48
7.3.120.0090.00615.07
7.3.110.0030.01214.95
7.3.100.0080.00514.87
7.3.90.0050.01114.99
7.3.80.0100.00314.89
7.3.70.0080.00614.82
7.3.60.0050.01114.80
7.3.50.0030.00914.80
7.3.40.0050.00814.80
7.3.30.0030.01014.89
7.3.20.0070.00516.76
7.3.10.0060.00616.71
7.3.00.0060.00616.54
7.2.330.0030.01416.59
7.2.320.0060.01016.85
7.2.310.0130.00316.74
7.2.300.0060.00916.58
7.2.290.0070.01016.60
7.2.250.0110.00714.86
7.2.240.0090.00715.07
7.2.230.0050.00815.17
7.2.220.0070.00815.16
7.2.210.0030.01015.14
7.2.200.0100.00615.04
7.2.190.0050.00915.13
7.2.180.0040.01115.12
7.2.170.0080.00815.15
7.2.160.0030.01015.06
7.2.150.0060.00916.95
7.2.140.0130.00316.85
7.2.130.0120.00316.90
7.2.120.0060.00716.68
7.2.110.0030.01016.59
7.2.100.0030.01117.11
7.2.90.0090.00617.05
7.2.80.0090.00916.79
7.2.70.0040.00916.76
7.2.60.0070.00817.07
7.2.50.0030.01316.88
7.2.40.0080.00416.87
7.2.30.0110.00717.09
7.2.20.0120.00317.12
7.2.10.0110.00017.00
7.2.00.0070.00718.14
7.1.330.0080.00815.85
7.1.320.0030.01215.87
7.1.310.0090.00515.91
7.1.300.0030.00715.80
7.1.290.0050.00515.89
7.1.280.0050.00815.68
7.1.270.0090.00315.70
7.1.260.0080.00615.78
7.1.250.0070.00715.99
7.1.200.0060.00915.69
7.1.100.0070.01017.98
7.1.70.0000.00717.16
7.1.60.0000.02419.33
7.1.50.0100.01016.93
7.1.00.0070.07022.33
7.0.200.0130.00016.73
7.0.140.0000.07722.05
7.0.60.0070.07319.95
7.0.50.0070.04317.82
7.0.40.0070.08720.30
7.0.30.0200.04320.13
7.0.20.0370.06720.07
7.0.10.0000.04720.05
7.0.00.0000.07020.18
5.6.210.0070.07320.50
5.6.200.0100.07318.29
5.6.190.0030.06720.41
5.6.180.0270.03320.58
5.6.170.0400.06720.57
5.6.160.0100.04720.54
5.6.150.0070.06718.15
5.6.140.0000.04718.26
5.6.130.0100.07718.15
5.6.120.0030.04021.13
5.6.110.0100.07721.12
5.6.100.0130.07321.09
5.6.90.0100.08321.11
5.6.80.0000.07020.45
5.6.70.4430.04020.37
5.5.350.0100.04720.41
5.5.340.0100.03017.92
5.5.330.0100.03720.31
5.5.320.0030.04020.30
5.5.310.0270.08320.30
5.5.300.0100.07717.96
5.5.290.0030.07318.08
5.5.280.0000.04320.66
5.5.270.0070.04720.93
5.5.260.0170.07720.96
5.5.250.0100.08320.47
5.5.240.0270.07320.38
5.4.450.1470.08319.61
5.4.440.0930.07019.59
5.4.430.0270.04019.21
5.4.420.0500.05019.16
5.4.410.0900.05319.04
5.4.400.0700.05719.13
5.4.390.0870.05719.17
5.4.380.0400.05718.75
5.4.370.0200.05718.77
5.4.360.0330.05018.86
5.4.350.0370.05018.81
5.4.340.0370.05318.58
5.4.320.0080.03412.50
5.4.310.0070.03812.50
5.4.300.0090.04012.51
5.4.290.0050.04212.50
5.4.280.0190.05512.37
5.4.270.0160.10412.37
5.4.260.0100.06412.38
5.4.250.0090.04112.38
5.4.240.0080.05312.38
5.4.230.0120.07012.36
5.4.220.0140.07312.37
5.4.210.0120.07512.37
5.4.200.0200.06212.36
5.4.190.0140.07012.36
5.4.180.0090.07012.36
5.4.170.0150.06712.37
5.4.160.0140.05812.36
5.4.150.0120.05812.36
5.4.140.0100.05512.04
5.4.130.0100.05112.03
5.4.120.0140.06111.99
5.4.110.0140.06211.98
5.4.100.0080.06211.99
5.4.90.0180.07911.99
5.4.80.0150.06311.99
5.4.70.0180.06611.98
5.4.60.0260.09311.98
5.4.50.0180.06911.98
5.4.40.0120.06711.97
5.4.30.0170.05211.96
5.4.20.0070.05111.97
5.4.10.0070.05211.96
5.4.00.0070.05111.45
5.3.290.0140.04012.80
5.3.280.0110.05412.71
5.3.270.0080.06512.73
5.3.260.0110.05812.72
5.3.250.0140.05312.71
5.3.240.0100.06112.72
5.3.230.0170.05812.71
5.3.220.0080.05612.68
5.3.210.0110.05312.68
5.3.200.0120.05212.68
5.3.190.0110.05112.68
5.3.180.0140.05212.67
5.3.170.0100.05512.67
5.3.160.0110.06212.68
5.3.150.0140.05712.67
5.3.140.0090.05112.66
5.3.130.0080.07412.66
5.3.120.0100.06412.66
5.3.110.0080.05612.66
5.3.100.0080.05012.12
5.3.90.0120.05812.08
5.3.80.0110.09612.08
5.3.70.0120.05312.08
5.3.60.0050.05512.07
5.3.50.0130.06912.00
5.3.40.0080.04312.00
5.3.30.0090.03711.96
5.3.20.0100.04911.74
5.3.10.0050.05311.70
5.3.00.0130.04911.69
5.2.170.0080.0399.18
5.2.160.0080.0309.19
5.2.150.0070.0409.19
5.2.140.0070.0479.18
5.2.130.0070.0429.14
5.2.120.0080.0459.14
5.2.110.0080.0389.15
5.2.100.0040.0409.15
5.2.90.0070.0489.14
5.2.80.0100.0469.15
5.2.70.0140.0479.14
5.2.60.0110.0459.10
5.2.50.0080.0549.07
5.2.40.0120.0379.04
5.2.30.0110.0459.02
5.2.20.0130.0559.01
5.2.10.0100.0408.92
5.2.00.0120.0438.79
5.1.60.0070.0408.07
5.1.50.0140.0518.07
5.1.40.0100.0358.05
5.1.30.0090.0378.40
5.1.20.0060.0458.42
5.1.10.0050.0368.15
5.1.00.0120.0478.15
5.0.50.0070.0276.64
5.0.40.0100.0376.50
5.0.30.0060.0626.30
5.0.20.0110.0376.29
5.0.10.0040.0316.26
5.0.00.0070.0296.26
4.4.90.0020.0424.78
4.4.80.0040.0244.76
4.4.70.0030.0174.75
4.4.60.0030.0184.75
4.4.50.0040.0154.77
4.4.40.0050.0254.70
4.4.30.0030.0154.75
4.4.20.0040.0154.84
4.4.10.0040.0154.85
4.4.00.0040.0284.76
4.3.110.0020.0214.67
4.3.100.0080.0214.67
4.3.90.0110.0284.63
4.3.80.0030.0324.59
4.3.70.0050.0184.63
4.3.60.0080.0144.63
4.3.50.0020.0224.63
4.3.40.0040.0334.54
4.3.30.0030.0243.29
4.3.20.0040.0233.27
4.3.10.0110.0333.24
4.3.00.0000.01310.37

preferences:
29.69 ms | 401 KiB | 5 Q